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Apatite supergroup [abbr. Ap ]

[ M ][X|( T O₄)₃]

M: [ 3+: Ce, La, Y, Bi, REE ][ 2+: Ca, Pb, Ba, Sr, Mn, Cd, Co ][ 1+: Na, K ]

T: [ 6+: S, Cr ][ 5+: P, As, V, Mn ][ 4+: Si, Ge ][ 3+: B, Be ]

X: [ 2-: O ][ 1-: F, Cl, OH ][ 0: H₂O, [] ]

• [ M ][ T ]
• [ A²⁺₅ ][ T ]: Apatite group
• [ (AB)⁴⁺C²⁺₃ ][ P ]: Belovite group
• [ (A³⁺,B²⁺)₅ ][ Si ]: Britholite group
• [ A²⁺₅ ][ S_0.5Si_0.5 ]: Ellestadite group
• [ A²⁺₂B²⁺₃ ][ T ]: Hedyphane group

• Class: Phosphate
• System: Hexagonal, Trigonal, Pseudohexagonal